Knob



FIG. 1 is a perspective view of a knob showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The bottom view is plain and unornamented and forms no part of the claimed design.

The broken line showing of surface features is included for the purpose of illustrating portions of the knob and forms no part of the claimed design. 

CLAIM The ornamental design for a knob, as shown and described. 